ITPEC IP April 2021 Question 44
ITPEC IP April 2021 — Question 44 of 100
Selecting characters from remembered positions in a displayed table is matrix authentication. The table contents can change between sessions, while the user remembers which positions to read, making the entered sequence vary rather than exposing a fixed password directly.
Answer (c)
Why not others:
- a password valid once is a one-time password, not single sign-on
- one authentication granting access to multiple systems is single sign-on, not an OTP
- fingerprints and voiceprints are biometric authentication, not challenge-response by definition
Key rule: Matrix authentication derives a response from secret positions in a changing character grid.
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